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Huo W, Takayama K, Miki K, Nogita K, Shao S, Suzuki A, Morimoto T, Mu H, Ohe K. AIE-ESIPT Photoluminescent Probe Based on 3-(3-Hydroxypyridin-2-yl)isoquinolin-4-ol for the Detection of Intracellular Hydrogen Peroxide. Chemistry 2024:e202401451. [PMID: 38803241 DOI: 10.1002/chem.202401451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Revised: 05/23/2024] [Accepted: 05/27/2024] [Indexed: 05/29/2024]
Abstract
Excited-state intramolecular proton transfer (ESIPT) molecules, which feature large Stokes shifts to avoid self-absorption, play an essential role in photoluminescent bioimaging probes. Herein, we report the development of an ESIPT molecule 3-(3-hydroxypyridin-2-yl)isoquinolin-4-ol (PiQ). PiQ not only undergoes a distinct ESIPT process unlike the symmetrical 2,2'-bipyridyl-3,3'-diol but also exhibits aggregation-induced emission (AIE) characteristics. PiQ self-assembles into aggregates with an average size of 241.0±51.9 nm in aqueous solutions, leading to significantly enhanced photoluminescence. On the basis of the ESIPT and AIE characteristics of PiQ, the latter is functionalized with a hydrogen peroxide-responsive 4-pinacoratoborylbenzyl group (B) and a carboxylesterase-responsive acetyl group (A) to produce a photoluminescent probe B-PiQ-A. The potential of PiQ for applications in bioimaging and chemical sensing is underscored by its efficient detection of both endogenous and exogenous hydrogen peroxide in living cells.
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Affiliation(s)
- Wenting Huo
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kohei Takayama
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Koji Miki
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kohei Nogita
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Shuai Shao
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Ayako Suzuki
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Takashi Morimoto
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Huiying Mu
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kouichi Ohe
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
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2
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Shukla A, Jha VK, Chatterjee S. Non-trivial ground and excited state photophysics of a substituted phenol. Phys Chem Chem Phys 2024; 26:6655-6666. [PMID: 37975741 DOI: 10.1039/d3cp04570f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
5-(tert-Butyl)-2-hydroxy-1,3-isophthalaldehyde (5-tBHI) shows solvent dependent single or dual emission. The photophysics of 5-tBHI has been studied in a variety of solvents and the results were compared with that of the methyl derivative of the probe as well as the 5-tBHI anion. It has been found that the intramolecular H-bonded conformer of 5-tBHI predominantly exists in non-polar solvents, and undergoes facile excited state intramolecular proton transfer (ESIPT). On the other hand, a dynamic equilibrium can be found in polar, protic solvents, even in the ground state, except in water. NMR analyses confirm the loss of aromaticity of the probe in the ground state via anion formation, in equilibrium with the solvent mediated intermolecularly H-bonded state, in neat polar protic solvents like methanol. The proton transfer process, either intramolecularly or intermolecularly, was found to be of the order of 1 ps, and even faster than the instrumental resolution in the case of water. The current finding provides important insights on the photophysics of this small, substituted phenol.
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Affiliation(s)
- Aparna Shukla
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines) Dhanbad, Dhanbad 826004, Jharkhand, India.
| | - Vikas Kumar Jha
- Discipline of Chemistry, School of Chemical and Material Sciences, Department of Chemistry, Indian Institute of Technology Goa, Ponda, Goa 403401, India
| | - Soumit Chatterjee
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines) Dhanbad, Dhanbad 826004, Jharkhand, India.
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3
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Effects and Influence of External Electric Fields on the Equilibrium Properties of Tautomeric Molecules. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020695. [PMID: 36677753 PMCID: PMC9865840 DOI: 10.3390/molecules28020695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 01/06/2023] [Indexed: 01/13/2023]
Abstract
In this review, we have attempted to briefly summarize the influence of an external electric field on an assembly of tautomeric molecules and to what experimentally observable effects this interaction can lead to. We have focused more extensively on the influence of an oriented external electric field (OEEF) on excited-state intramolecular proton transfer (ESIPT) from the studies available to date. The possibilities provided by OEEF for regulating several processes and studying physicochemical processes in tautomers have turned this direction into an attractive area of research due to its numerous applications.
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4
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Nandi S, Sarkar N. A review on recent application of proton transfer photophysics of bipyridine-3,3′-diol in organized assemblies. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02095-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Huo W, Miki K, Tokunaga D, Mu H, Oe M, Harada H, Ohe K. Dual-Stimuli-Responsive Probes for Detection of Ovarian Cancer Cells and Quantification of Both pH and Enzyme Activity. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Wenting Huo
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Koji Miki
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Daisuke Tokunaga
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Huiying Mu
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Masahiro Oe
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Hiroshi Harada
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Kouichi Ohe
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
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6
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Wang X, Zhang S, Zhao H, Wang Q, Zhang Y, Xu H, Xia X, Han S. Spectroscopic Investigation into the Binding of Ferulic Acid with Sodium Deoxycholate: Hydrophobic Force Versus Hydrogen Bonding. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:1420-1428. [PMID: 33475381 DOI: 10.1021/acs.langmuir.0c02880] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The binding of ferulic acid (FA) with sodium deoxycholate (NaDC) has been investigated using fluorescence and absorption measurements. The fluorescence probe technique of pyrene reveals that the presence of FA favors the micellization of NaDC, leading to the decreased critical micelle concentrations for the formation of NaDC micelles. As NaDC molecules change gradually from monomers via primary micelles into secondary micelles, the intensities of absorption and fluorescence spectra of FA increase at low NaDC concentrations, but decrease suddenly at intermediate NaDC concentrations, and finally increase again at high NaDC concentrations. These results corroborated well with FA fluorescence lifetime data suggesting that the aryl ring of FA hydrophobically binds to the convex surface of NaDC monomers, whereas the hydrogen bonding between FA and NaDC is significantly involved in NaDC primary micelles, which is gradually overcome by the hydrophobic interaction between FA and NaDC secondary micelles. The absorption and fluorescence spectra as well as the binding constant value of FA indicate the strong binding of FA in the large hydrophobic core of NaDC secondary micelles. At low FA concentrations, the measurement of FA anisotropy suggests that FA can increase the packing order of hydrophobic surfaces in NaDC secondary micelles, whereas the high amount of FA can greatly disrupt the packing structure of NaDC secondary micelles which is ascribed to the formation of FA dimers. The spectroscopic experiments outlined here present the binding events of FA with NaDC monomers and primary and secondary micelles, which are significantly related with the hydrophobic force and hydrogen bonding as well as the unique structural characteristics of bile salt.
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Affiliation(s)
- Xiaoyong Wang
- School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Shan Zhang
- School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Huiling Zhao
- School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Qian Wang
- School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yuke Zhang
- School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Hexiang Xu
- School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xinyu Xia
- School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Simin Han
- School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
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7
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Trannoy V, Léaustic A, Gadan S, Guillot R, Allain C, Clavier G, Mazerat S, Geffroy B, Yu P. A highly efficient solution and solid state ESIPT fluorophore and its OLED application. NEW J CHEM 2021. [DOI: 10.1039/d0nj05600f] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Readily accessible and functionalized ESIPT dyes with high fluorescence quantum yield in solution, including water, and in crystalline state are presented.
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Affiliation(s)
- Virgile Trannoy
- Université Paris-Saclay
- CNRS
- Institut de Chimie Moléculaire et des Matériaux d’Orsay
- Orsay
- France
| | - Anne Léaustic
- Université Paris-Saclay
- CNRS
- Institut de Chimie Moléculaire et des Matériaux d’Orsay
- Orsay
- France
| | - Sophie Gadan
- Université Paris-Saclay
- CNRS
- Institut de Chimie Moléculaire et des Matériaux d’Orsay
- Orsay
- France
| | - Régis Guillot
- Université Paris-Saclay
- CNRS
- Institut de Chimie Moléculaire et des Matériaux d’Orsay
- Orsay
- France
| | - Clémence Allain
- Université Paris-Saclay
- ENS Paris-Saclay
- CNRS
- PPSM
- 91190 Gif-sur-Yvette
| | - Gilles Clavier
- Université Paris-Saclay
- ENS Paris-Saclay
- CNRS
- PPSM
- 91190 Gif-sur-Yvette
| | - Sandra Mazerat
- Université Paris-Saclay
- CNRS
- Institut de Chimie Moléculaire et des Matériaux d’Orsay
- Orsay
- France
| | | | - Pei Yu
- Université Paris-Saclay
- CNRS
- Institut de Chimie Moléculaire et des Matériaux d’Orsay
- Orsay
- France
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8
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Chaihan K, Kungwan N. Effect of number and different types of proton donors on excited-state intramolecular single and double proton transfer in bipyridine derivatives: theoretical insights. NEW J CHEM 2020. [DOI: 10.1039/d0nj01304h] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Intra-HBs are strengthened upon photoexcitation, confirmed by red-shift in vibrational mode and topology analysis. Number and type of donors result in difference in photophysical properties. Occurrence of ESIPT depends on barrier and reaction energy.
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Affiliation(s)
- Komsun Chaihan
- Department of Chemistry, Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
- The Graduate School
| | - Nawee Kungwan
- Department of Chemistry, Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
- Center of Excellence in Materials Science and Technology
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9
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Chatterjee S, Ahire K, Karuso P. Room-Temperature Dual Fluorescence of a Locked Green Fluorescent Protein Chromophore Analogue. J Am Chem Soc 2019; 142:738-749. [PMID: 31846319 DOI: 10.1021/jacs.9b05096] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A structurally locked green fluorescent protein (GFP) chromophore with a phenyl group at C(2) of the imidazolone has been synthesized. Rotation around the exocyclic double bond is hindered, resulting in room-temperature fluorescence. The quantum yield in water is 500 times greater than that of unlocked analogues. Unlike the methyl-substituted analogue, the phenyl analogue exhibits a dual emission (cyan and red) that can be used for ultrasensitive ratiometric measurements and fluorescence microscopy. To explain this dual emission, DFT calculations were carried out along with fluorescence upconversion experiments. The Z-isomer was found to be emissive, while the origin of the dual emission was dependent on the phenyl group in the Z-isomer, which stabilizes the Franck-Condon state, resulting in a cyan fluorescence, while the zwitterionic tautomer fluoresces red. These results bring important new insights into the photophysics of the GFP chromophore and provide a new scaffold capable of dual emission with utility in biotechnology.
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Affiliation(s)
- Soumit Chatterjee
- Department of Molecular Sciences , Macquarie University , Sydney , NSW 2109 , Australia
| | - Ketan Ahire
- Department of Molecular Sciences , Macquarie University , Sydney , NSW 2109 , Australia
| | - Peter Karuso
- Department of Molecular Sciences , Macquarie University , Sydney , NSW 2109 , Australia
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10
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Das M, Sahu S, Krishnamoorthy G. Tweaking the proton transfer triggered proton transfer of 3,5-bis(2-hydroxyphenyl)-1H-1,2,4-triazole. Phys Chem Chem Phys 2019; 21:15669-15677. [DOI: 10.1039/c9cp02281c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Proton transfer triggered proton transfer (PTTPT) of the molecule is completely altered by dimethylformamide and the proton transfer paths are changed. The process can be reversed by silver particle.
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Affiliation(s)
- Minati Das
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati
- India
| | - Saugata Sahu
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati
- India
| | - G. Krishnamoorthy
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati
- India
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11
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Pallavi P, Kumar V, Hussain MW, Patra A. Excited-State Intramolecular Proton Transfer-Based Multifunctional Solid-State Emitter: A Fluorescent Platform with "Write-Erase-Write" Function. ACS APPLIED MATERIALS & INTERFACES 2018; 10:44696-44705. [PMID: 30484630 DOI: 10.1021/acsami.8b14215] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The excited-state intramolecular proton transfer (ESIPT)-based molecular probes have drawn significant attention owing to their environment-sensitive fluorescence properties, large Stokes shift, and emerged as building blocks for the development of molecular sensors and switches. However, most of the ESIPT-based fluorophores exhibit weak emission in the solid state limiting the scope of real-time applications. Addressing such issues, herein, we presented a C3 symmetric-like molecular architecture employing a simple one-step Schiff base condensation between triaminoguanidinium chloride and 3,5-di- tert-butyl-2-hydroxybenzaldehyde (TGHB). The temperature-dependent fluorescence studies including at 77 K indicated the strong emission from the keto tautomer compared to that of the enol tautomer. The facile ESIPT in TGHB in the solid-state led to a remarkable enhancement of fluorescence quantum yield of 1600 times compared to that of the solution (λem = 545 nm) by restricting the intramolecular rotation and subsequently suppressing the nonradiative deactivation. The excited-state processes were further elucidated through time-resolved fluorescence measurements. TGHB exhibited turn on-off fluorescence upon exposure to acid/base vapor in the form of a powder as well as a transparent, free-standing thin film. A rewritable and erasable fluorescent platform was demonstrated using TGHB as molecular ink, which offers a potential testbed for performing "write-erase-write" cycles multiple times. In addition, TGHB, possessing multiple binding sites (O and N donors) involving the central core of the triaminoguanidinium cation displayed selective turn-on fluorescence with Zn2+. The structure-property relationship revealed in the present study provides insight into the development of novel cost-effective multifunctional materials, which are promising for stimuli-responsive molecular switches.
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Affiliation(s)
- Pragyan Pallavi
- Indian Institute of Science Education and Research, Bhopal , Bhopal By-Pass Road , Bhauri, Bhopal 462066 , Madhya Pradesh , India
| | - Virendra Kumar
- Indian Institute of Science Education and Research, Bhopal , Bhopal By-Pass Road , Bhauri, Bhopal 462066 , Madhya Pradesh , India
| | - Md Waseem Hussain
- Indian Institute of Science Education and Research, Bhopal , Bhopal By-Pass Road , Bhauri, Bhopal 462066 , Madhya Pradesh , India
| | - Abhijit Patra
- Indian Institute of Science Education and Research, Bhopal , Bhopal By-Pass Road , Bhauri, Bhopal 462066 , Madhya Pradesh , India
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12
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Dutta R, Pyne A, Mondal D, Sarkar N. Effect of Microheterogeneity of Different Aqueous Binary Mixtures on the Proton Transfer Dynamics of [2,2'-Bipyridyl]-3,3'-diol: A Femtosecond Fluorescence Upconversion Study. ACS OMEGA 2018; 3:314-328. [PMID: 31457894 PMCID: PMC6641458 DOI: 10.1021/acsomega.7b01833] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 12/28/2017] [Indexed: 06/10/2023]
Abstract
In this article, we have investigated the excited-state intramolecular double proton transfer dynamics of [2,2'-bipyridyl]-3,3'-diol, BP(OH)2, in three alcohol-water binary mixtures, namely, ethanol (EtOH)-water, n-propanol (PrOH)-water, tert-butyl alcohol (TBA)-water, and dimethyl sulfoxide (DMSO)-water utilizing the femtosecond fluorescence upconversion technique. We have found that in alcohol-water binary mixtures the proton transfer (PT) pathway of BP(OH)2 is sequential and the anomalous slowdown in PT dynamics is observed in mole fraction (χ) ranges χEtOH = 0.04-0.07, χEtOH = 0.23-0.28, χPrOH = 0.17-0.30, χTBA = 0.12-0.21, and χTBA = 0.40-0.46. Our study sheds light on the involvement of water network in the PT dynamics. Reduction in water accessibility due to the involvement of water molecules in cluster formation results in hindered PT dynamics, and this retardation is more for the TBA-water binary mixture compared to that for the other two mixtures. Additionally, we have found two anomalous regions for the DMSO-water binary mixture in ranges χDMSO = 0.12-0.16 and χDMSO = 0.26-0.34. However, most interestingly, beyond χDMSO = 0.40, we do not find any growth component in the femtosecond fluorescence upconversion trace, which may be due to the change in the PT mechanism from a sequential water-mediated pathway to a concerted intramolecular pathway.
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13
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Sahu S, Das M, Bharti AK, Krishnamoorthy G. Proton transfer triggered proton transfer: a self-assisted twin excited state intramolecular proton transfer. Phys Chem Chem Phys 2018; 20:27131-27139. [DOI: 10.1039/c8cp03835j] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The double excited state intramolecular proton transfer (ESIPT) of 3,5-bis(2-hydroxyphenyl)-1H-1,2,4-triazole (bis-HPTA) has been investigated and found to undergo a new type of proton transfer.
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Affiliation(s)
- Saugata Sahu
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati
- India
| | - Minati Das
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati
- India
| | | | - G. Krishnamoorthy
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati
- India
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14
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Ghosh A, Purkayastha P. Surface Hovering of Probe on Cyclodextrin Nanoparticle that is Otherwise Sequestered in Isolated Cyclodextrin Cavity. ChemistrySelect 2017. [DOI: 10.1002/slct.201701843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ashutosh Ghosh
- Department of Chemical Sciences and Centre for Advanced Functional Materials; Indian Institute of Science Education and Research (IISER) Kolkata; Mohanpur, WB 741246 India
| | - Pradipta Purkayastha
- Department of Chemical Sciences and Centre for Advanced Functional Materials; Indian Institute of Science Education and Research (IISER) Kolkata; Mohanpur, WB 741246 India
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15
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Zhao J, Liu X, Zheng Y. Controlling Excited State Single versus Double Proton Transfer for 2,2'-Bipyridyl-3,3'-diol: Solvent Effect. J Phys Chem A 2017; 121:4002-4008. [PMID: 28471672 DOI: 10.1021/acs.jpca.7b01404] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this work, we theoretically investigate the sequential excited state double proton transfer (ESDPT) mechanism of a representative intramolecular hydroxyl (OH)-type hydrogen molecule 2,2'-bipyridyl-3,3'-diol (BP(OH)2). We mainly adopt three kinds of different polar solvents (nonpolar cyclohexane (CYH), polar acetonitrile (ACN), and moderate chloroform (CHCl3)) to explore solvent effects on this system. Two intramolecular hydrogen bonds of BP(OH)2 are testified to be strengthened in the S1 state, which provides possibility for ESDPT process. Explorations of charge redistribution and potential energy surfaces (PESs) reveal ESDPT process. Searching transition state (TS) structures in different polar aprotic solvents, we successfully regulate and control the stepwise ESDPT behaviors of BP(OH)2 through solvent polarity.
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Affiliation(s)
- Jinfeng Zhao
- School of Physics, Shandong University , Jinan 250100, China
| | - Xiaoyan Liu
- School of Physics, Shandong University , Jinan 250100, China
| | - Yujun Zheng
- School of Physics, Shandong University , Jinan 250100, China
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16
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Xiao H, Shi X, Zhang Y, Liao X, Hao F, Lackner KS, Chen X. The catalytic effect of H2O on the hydrolysis of CO32−in hydrated clusters and its implication in the humidity driven CO2air capture. Phys Chem Chem Phys 2017; 19:27435-27441. [DOI: 10.1039/c7cp04218c] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Incomplete hydration shells facilitate the hydrolysis of CO32−to be not only thermodynamically favorable but also kinetically favorable.
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Affiliation(s)
- Hang Xiao
- Columbia Nanomechanics Research Center, Department of Earth and Environmental Engineering, Columbia University
- New York
- USA
| | - Xiaoyang Shi
- Columbia Nanomechanics Research Center, Department of Earth and Environmental Engineering, Columbia University
- New York
- USA
| | - Yayun Zhang
- Columbia Nanomechanics Research Center, Department of Earth and Environmental Engineering, Columbia University
- New York
- USA
- Bioproducts, Sciences and Engineering Laboratory, Department of Biological Systems Engineering, Washington State University
- Richland
| | - Xiangbiao Liao
- Columbia Nanomechanics Research Center, Department of Earth and Environmental Engineering, Columbia University
- New York
- USA
| | - Feng Hao
- Columbia Nanomechanics Research Center, Department of Earth and Environmental Engineering, Columbia University
- New York
- USA
| | - Klaus S. Lackner
- School of Sustainable Engineering & Built Environment, Arizona State University
- Tempe
- USA
| | - Xi Chen
- Columbia Nanomechanics Research Center, Department of Earth and Environmental Engineering, Columbia University
- New York
- USA
- School of Chemical Engineering, Northwest University
- Xi’an
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17
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Kundu N, Banerjee P, Dutta R, Kundu S, Saini RK, Halder M, Sarkar N. Proton Transfer Pathways of 2,2'-Bipyridine-3,3'-diol in pH Responsive Fatty Acid Self-Assemblies: Multiwavelength Fluorescence Lifetime Imaging in a Single Vesicle. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:13284-13295. [PMID: 27951700 DOI: 10.1021/acs.langmuir.6b03404] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Fatty acids are known to form different supramolecular aggregates in aqueous solutions depending on the pH of the medium. The dynamics of the transformation of oleate micelles into oleic acid/oleate vesicles has been investigated using a pH-sensitive intramolecular proton transfer fluorophore, 2,2'-bipyridine-3,3'-diol [BP(OH)2]. Different prototropic forms of BP(OH)2 exist in different pH values of the system, and thus, the ground state and the excited state dynamics of BP(OH)2 have been modulated in these confined media. The formation of different tautomeric forms of BP(OH)2 in oleate micelles (at basic pH) is confirmed using time-resolved emission spectra and fluorescence anisotropy measurements. The hydrophobic environment provided by these assemblies reduces the water-assisted nonradiative decay channels and lengthens the fluorescence lifetime of BP(OH)2. The rotational relaxation time in the micellar assembly is higher than that in the vesicle, which may be due to the higher microviscosity sensed by the fluorophore in the micelle. Besides, we have shown for the first time that BP(OH)2 can be used as a membrane-bound fluorophore, using fluorescence lifetime imaging microscopy (FLIM). A broad distribution in the size of the vesicle is observed from the FLIM image. Further, we have used multiwavelength FLIM to collect the FLIM images of a single vesicle at different emission wavelengths, and the lifetime distribution obtained from the FLIM images at different emission wavelengths in a single vesicle correlates well with the lifetime values obtained from the ensemble average measurements in the bulk solution.
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Affiliation(s)
- Niloy Kundu
- Department of Chemistry, Indian Institute of Technology , Kharagpur 721302, West Bengal, India
| | - Pavel Banerjee
- Department of Chemistry, Indian Institute of Technology , Kharagpur 721302, West Bengal, India
| | - Rupam Dutta
- Department of Chemistry, Indian Institute of Technology , Kharagpur 721302, West Bengal, India
| | - Sangita Kundu
- Department of Chemistry, Indian Institute of Technology , Kharagpur 721302, West Bengal, India
| | - Rajesh Kumar Saini
- Department of Chemistry, Indian Institute of Technology , Kharagpur 721302, West Bengal, India
| | - Mintu Halder
- Department of Chemistry, Indian Institute of Technology , Kharagpur 721302, West Bengal, India
| | - Nilmoni Sarkar
- Department of Chemistry, Indian Institute of Technology , Kharagpur 721302, West Bengal, India
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18
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Banik D, Roy A, Kundu N, Sarkar N. Modulation of the Excited-State Dynamics of 2,2′-Bipyridine-3,3′-diol in Crown Ethers: A Possible Way To Control the Morphology of a Glycine Fibril through Fluorescence Lifetime Imaging Microscopy. J Phys Chem B 2016; 120:11247-11255. [PMID: 27709952 DOI: 10.1021/acs.jpcb.6b07524] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Debasis Banik
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Arpita Roy
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Niloy Kundu
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Nilmoni Sarkar
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
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19
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Sulaiman SAJ, Al-Rasbi GS, Abou-Zied OK. Photophysical properties of hydroxyphenyl benzazoles and their applications as fluorescent probes to study local environment in DNA, protein and lipid. LUMINESCENCE 2016; 31:614-25. [DOI: 10.1002/bio.3106] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 01/01/2016] [Accepted: 01/10/2016] [Indexed: 12/22/2022]
Affiliation(s)
| | - Ghalia S. Al-Rasbi
- Department of Chemistry; Sultan Qaboos University; Muscat Sultanate of Oman
| | - Osama K. Abou-Zied
- Department of Chemistry; Sultan Qaboos University; Muscat Sultanate of Oman
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20
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Satpathi S, Gavvala K, Hazra P. Fluorescence Up-Conversion Studies of [2,2′-Bipyridyl]-3,3′-diol in Octyl-β-d-glucoside and Other Micellar Aggregates. J Phys Chem A 2015; 119:12715-21. [DOI: 10.1021/acs.jpca.5b09832] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sagar Satpathi
- Department
of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune, Pune 411008, Maharashtra, India
| | - Krishna Gavvala
- Department
of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune, Pune 411008, Maharashtra, India
| | - Partha Hazra
- Department
of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune, Pune 411008, Maharashtra, India
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21
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Nag TN, Das T, Mondal S, Maity A, Purkayastha P. Promoting the "water-wire" mechanism of double proton transfer in [2,2'-bipyridyl]-3,3'-diol by porous gold nanoparticles. Phys Chem Chem Phys 2015; 17:6572-6. [PMID: 25662192 DOI: 10.1039/c4cp03968h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The effect of nanopores in porous gold nanoparticles (Au NPs) on excited-state double proton transfer (DPT) in [2,2'-bipyridyl]-3,3'-diol (BP(OH)2) in an aqueous environment is the main focus of the present work. DPT in BP(OH)2 is known to take place through two mechanisms. In a bulk environment, an open solvated molecule facilitates the process and emits at 460 nm whereas, in a confined situation, formation of a "water wire" between the prototropic centers leads to the transfer of protons. It has been shown spectroscopically in the present study that in the nanovessels provided by nanoporous Au NPs, the unconventional mechanism of DPT through the formation of a "water wire" is promoted due to the presence of a limited number of water molecules around the probe. Experiments in the presence of solid pure Au, Ag and Au/Ag NPs were performed to support our proposition. Time-resolved fluorescence spectral changes confirm our findings.
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Affiliation(s)
- Tarak Nath Nag
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741246, India.
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22
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Detecting local heterogeneity and ionization ability in the head group region of different lipidic phases using modified fluorescent probes. Sci Rep 2015; 5:8699. [PMID: 25731606 PMCID: PMC4346976 DOI: 10.1038/srep08699] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 02/02/2015] [Indexed: 11/09/2022] Open
Abstract
Local heterogeneity in lipid self-assembly is important for executing the cellular membrane functions. In this work, we chemically modified 2-(2'-hydroxyphenyl)benzoxazole (HBO) and attached a C8 alkyl chain in two different locations to probe the microscopic environment of four lipidic phases of dodecyl β-maltoside. The fluorescence change in HBO and the new probes (HBO-1 and HBO-2) shows that in all phases (micellar, hexagonal, cubic and lamellar) three HBO tautomeric species (solvated syn-enol, anionic, and closed syn-keto) are stable. The formation of multi tautomers reflects the heterogeneity of the lipidic phases. The results indicate that HBO and HBO-1 reside in a similar location within the head group region, whereas HBO-2 is slightly pushed away from the sugar-dominated area. The stability of the solvated syn-enol tautomer is due to the formation of a hydrogen bond between the OH group of the HBO moiety and an adjacent oxygen atom of a sugar unit. The detected HBO anions was proposed to be a consequence of this solvation effect where a hydrogen ion abstraction by the sugar units is enhanced. Our results point to a degree of local heterogeneity and ionization ability in the head group region as a consequence of the sugar amphoterism.
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23
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Ghosh S, Kuchlyan J, Roychowdhury S, Banik D, Kundu N, Roy A, Sarkar N. Unique Influence of Cholesterol on Modifying the Aggregation Behavior of Surfactant Assemblies: Investigation of Photophysical and Dynamical Properties of 2,2′-Bipyridine-3,3′-diol, BP(OH)2 in Surfactant Micelles, and Surfactant/Cholesterol Forming Vesicles. J Phys Chem B 2014; 118:9329-40. [PMID: 25036947 DOI: 10.1021/jp503938b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Surajit Ghosh
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Jagannath Kuchlyan
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Subhajit Roychowdhury
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Debasis Banik
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Niloy Kundu
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Arpita Roy
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Nilmoni Sarkar
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
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24
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Zhu Y, Zheng X, Yu B, Yang W, Zhao N, Xu F. Efficient gene carriers composed of 2-hydroxypropyl-β-cyclodextrin, ethanolamine-functionalized poly(glycidyl methacrylate), and poly((2-dimethyl amino)ethyl methacrylate) by combination of ATRP and click chemistry. Macromol Biosci 2014; 14:1135-48. [PMID: 24789347 DOI: 10.1002/mabi.201400062] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 03/11/2014] [Indexed: 11/10/2022]
Abstract
In this work, a simple one-step method is first employed to produce the bromoisobutyryl-terminated 2-hydroxypropyl-β-cyclodextrin (HPCD-Br). The pendant epoxy groups of poly(glycidyl methacrylate) block prepared via ATRP from HPCD-Br can be reacted with ethanolamine to produce HPCD-PGEA which exhibits much lower cytotoxicity and better gene transfection yield than polyethylenimine (25 kDa) in COS7 and HepG2 cell lines. Moreover, poly((2-dimethyl amino)ethyl methacrylate) blocks can be incorporated into low-molecular-weight HPCD-PGEA via "click" reaction to further enhance the gene transfection efficiency in HepG2 cell lines.
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Affiliation(s)
- Yun Zhu
- State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing, 100029, China
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25
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Gavvala K, Sengupta A, Koninti RK, Hazra P. Femtosecond to nanosecond dynamics of 2,2′-bipyridine-3,3′-diol inside the nano-cavities of molecular containers. Phys Chem Chem Phys 2014; 16:933-9. [DOI: 10.1039/c3cp54038c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Mandal S, Ghosh S, Banerjee C, Kuchlyan J, Sarkar N. Unique Photophysical Behavior of 2,2′-Bipyridine-3,3′-diol in DMSO–Water Binary Mixtures: Potential Application for Fluorescence Sensing of Zn2+ Based on the Inhibition of Excited-State Intramolecular Double Proton Transfer. J Phys Chem B 2013; 117:12212-23. [DOI: 10.1021/jp406853r] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sarthak Mandal
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Surajit Ghosh
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Chiranjib Banerjee
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Jagannath Kuchlyan
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
| | - Nilmoni Sarkar
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
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27
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Mandal S, Ghosh S, Banerjee C, Kuchlyan J, Sarkar N. Roles of Viscosity, Polarity, and Hydrogen-Bonding Ability of a Pyrrolidinium Ionic Liquid and Its Binary Mixtures in the Photophysics and Rotational Dynamics of the Potent Excited-State Intramolecular Proton-Transfer Probe 2,2′-Bipyridine-3,3′-diol. J Phys Chem B 2013; 117:6789-800. [PMID: 23668553 DOI: 10.1021/jp4025443] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sarthak Mandal
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Surajit Ghosh
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Chiranjib Banerjee
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Jagannath Kuchlyan
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Nilmoni Sarkar
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
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28
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Mandal S, Ghosh S, Aggala HHK, Banerjee C, Rao VG, Sarkar N. Modulation of the photophysical properties of 2,2'-bipyridine-3,3'-diol inside bile salt aggregates: a fluorescence-based study for the molecular recognition of bile salts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:133-143. [PMID: 23215031 DOI: 10.1021/la304319r] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
2,2'-Bipyridine-3,3'-diol (BP(OH)(2)) has been used as a sensitive excited-state intramolecular proton transfer fluorophore to assess different bile salt aggregates as one of the potential biologically relevant host systems useful for carrying many sparingly water-soluble drug molecules. The formation of inclusion complexes, complex-induced fluorescence behavior, and their binding ability have been investigated from the modulated photophysics of BP(OH)(2) by means of photophysical techniques. The constrained hydrophobic environment provided by the aggregates significantly reduces the water-assisted nonradiative decay channels and lengthens the fluorescence lifetime of the proton-transferred DK tautomer. Both the absorption and fluorescence properties of BP(OH)(2) are found to be sensitive to the change in the structure, size, and hydrophobicity of the aggregates. Fluorescence quenching experiments were performed to gain insight into the differential distribution of the probe molecules between bulk aqueous phase and nanocavities of various aggregates. The observation of longer fluorescence lifetime and rotational relaxation time in NaDC aggregates compared to that in NaCh and NaTC aggregates indicates that the binding structures of NaDC aggregates are more rigid due to its greater hydrophobicity and larger size and therefore provide better protection to the bound guest. It is noteworthy to mention that the hydrophobic microenvironments provided by bile salt aggregates are much stronger than that provided by micelles and cyclodextrins. The accessibility of water to the aggregate-bound guest can significantly be enhanced with the addition of organic cosolvents. However, the efficiency decreases in the order of dimethylformamide, acetonitrile, and methanol.
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Affiliation(s)
- Sarthak Mandal
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, WB, India
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29
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Abou-Zied OK. Spectroscopy of hydroxyphenyl benzazoles in solution and human serum albumin: detecting flexibility, specificity and high affinity of the warfarin drug binding site. RSC Adv 2013. [DOI: 10.1039/c3ra40907d] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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30
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De D, Santra K, Datta A. Prototropism of [2,2′-Bipyridyl]-3,3′-diol in Albumin–SDS Aggregates. J Phys Chem B 2012; 116:11466-72. [DOI: 10.1021/jp306027h] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Dipanwita De
- Department
of Chemistry, Indian Institute of Technology, Bombay Powai, Mumbai 400 076, India
| | - Kalyan Santra
- Department
of Chemistry, Indian Institute of Technology, Bombay Powai, Mumbai 400 076, India
| | - Anindya Datta
- Department
of Chemistry, Indian Institute of Technology, Bombay Powai, Mumbai 400 076, India
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31
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Iyer ESS, Datta A. (2,2′-Bipyridyl)-3-3′-diol in Nafion: Stabilization of Unusual Ground and Excited States. J Phys Chem B 2012; 116:5302-7. [DOI: 10.1021/jp301034v] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | - Anindya Datta
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
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32
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Abou-Zied OK. Revealing the ionization ability of binding site I of human serum albumin using 2-(2′-hydroxyphenyl)benzoxazole as a pH sensitive probe. Phys Chem Chem Phys 2012; 14:2832-9. [DOI: 10.1039/c2cp23337a] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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33
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Wagner BD. Hydrogen bonding of excited states in supramolecular host–guest inclusion complexes. Phys Chem Chem Phys 2012; 14:8825-35. [DOI: 10.1039/c2cp40310b] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Mandal S, Rao VG, Ghatak C, Pramanik R, Sarkar S, Sarkar N. Photophysics and Photodynamics of 1′-Hydroxy-2′-acetonaphthone (HAN) in Micelles and Nonionic Surfactants Forming Vesicles: A Comparative Study of Different Microenvironments of Surfactant Assemblies. J Phys Chem B 2011; 115:12108-19. [PMID: 21905698 DOI: 10.1021/jp204224f] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Sarthak Mandal
- Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Vishal Govind Rao
- Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Chiranjib Ghatak
- Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Rajib Pramanik
- Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Souravi Sarkar
- Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Nilmoni Sarkar
- Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
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35
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Al-Lawatia N, Husband J, Steinbrecher T, Abou-Zied OK. Tautomerism in 7-Hydroxyquinoline: A Combined Experimental and Theoretical Study in Water. J Phys Chem A 2011; 115:4195-201. [DOI: 10.1021/jp201649z] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Najla Al-Lawatia
- Department of Chemistry, Faculty of Science, Sultan Qaboos University, P. O. Box 36, Postal Code 123, Muscat, Sultanate of Oman
| | - John Husband
- Department of Chemistry, Faculty of Science, Sultan Qaboos University, P. O. Box 36, Postal Code 123, Muscat, Sultanate of Oman
| | - Thomas Steinbrecher
- Department of Chemistry, Faculty of Science, Sultan Qaboos University, P. O. Box 36, Postal Code 123, Muscat, Sultanate of Oman
| | - Osama K. Abou-Zied
- Department of Chemistry, Faculty of Science, Sultan Qaboos University, P. O. Box 36, Postal Code 123, Muscat, Sultanate of Oman
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36
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De D, Datta A. Modulation of Ground- and Excited-State Dynamics of [2,2′-Bipyridyl]-3,3′-diol by Micelles. J Phys Chem B 2011; 115:1032-7. [DOI: 10.1021/jp1098359] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dipanwita De
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Anindya Datta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
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